Wood grinding and polishing machine.



J. STEINGASSBR E. GOTTBSLEBEN.

WOOD GRINDING AND PGLISHING MACHINE.

APPLICATION TILED 1118,21, 1913.

Patented Oct. 14, 1913.

WNW gonzo rrr enrich.

JOSE? STEINGABSER $3M]; I'J E'IL GOT'IE$LEBEN, 93F ItZAZENGE, GERMANY.

WQOD GRINDING AND POLISHINGMACHNE 3&7 5,515.

Specification 03 Letters Patent.

ratenteao eta, leis.

Application filed February .21, mm. Serial Ito. M9380.

To all whom it may concern Be it known that we, Joser Sremoflesen and EMIL Gorrnsneeen, subjects of the Emperor of Germany, residing at Mayence, Germany, have invented certain lm rovements in lVood Grindin and Polishing Machines, of which the fol owing is a specification.

The present invention relates to a wood grinding and polishing machine of the kind in which the tool is held by a resiliently extensible and swingingly suspended driving shaft and adapted, while in motion, to adjust itself at various angles as determined by the surface under treatment.

The invention consists in the various details of construction and combination of parts as hereinafter set forth and claimed, its object being to provide a simple and easily operated machine whose revolving parts are, as far as practicable, covered up.

in the accompanying drawings the invention is illustrated. Figure 1 representing side View of the machine, partly in section, some of the elements being shown by broken lines, Fig. 2. a view of the upper part of the same, at right an les to Fig. Land Fig. 3,21 plan of the tool, the left half being shown in section on the line A-.\ of Fig. 1, and the other half in elevation.

The machine is composed of an electromotor a which is rigidly secured to a shaft 12 and suspended by means of the latter in a block 10, the latter being formed with an upwardly tapering slot 11in which the shaft can move. The block 10 is itself pivoted to a carriage 9 which is guided by means of rollers along a. supporting 'rail 16. The block 10 rocks in a plane which is at right angles to the movement of the shaft 12 relative to the block. arrangement the motor a is able to swing about the carriage 9 in all directions. It can also be transported by means of the carriage along the rail 16. A plate 13, secured to the block 10, has a slot in which the shaft 12 is" guided. A. spring 15 encircles the shaft 12 and bears against the plate 3 and against an adjustable nut 14 on the shaft. This spring although it allows the shaft to rock relative to the block 10, tends to urge the carriage 9 in the same direction as-thc shaft is swung. It is not,

coro. Z: or the like,

shaft d.

Owing to this suspended within reach of the operator, is employed for the starting and stopping of the motor.

Adjoining the lower part of the motor casing is a bearing 0 which holds the motor snugly fitted on and rigidly se cured to the bearing 0 is a pipe 6 within which another pipe f is adapted to move rotatably as 'well as longitudinally. The upper end of the pipe 7' holds a flanged socket in which guides the pipe within the pipe e and which slides on a square extension 1 of the motor shaft The rotary movement of the shafts (i and-g will therefore be transmitted to the pipe 1" the lower end of which is guided in a socket secured to the corresponding end of the pipe 0. A

shaft 76 is secured to the lower end of the A clamp 7 on the sleeve By means of the handles Z, the pipe f can, 7

while rotated by the motor, be drawn out of the pipe 6 in opposition to the spring a.

A spherical body 6 is'screwed'on the end of the shaft l: for the reception of the tool. The tool is in the present instancecomposed of a polishing disk 5 which is secured by means of curved blade sprin 'gs a: to a plate I on so that it can adapt itselfresiliently relative to the latter. The plate '11) is encircled by a ring u and carries in addition another,

narrow ring 0 to which shells 7, elasp'ingr the body 6 are secured. The shells? hold the tool connccteclto the body 6 and'enable' it to turn about .the latter. to a limited extent, in any desired vertical plane. The shells 7 are formed with vertical slots 8' in i which are guided the heads of two diai'net rically opposite screws 17 fitted in the body 6. Thesescrews, while allowing thetool to turn as previously noticed, compel the same to participate in the rotary movement.

of the body 6. v

The machine is manipulated by means of the hnndlcsl and allows. as will heapparenl. from the foregoing. th trawl to be mot-ed axially relative to the motor a and swingingly about the carriage 9. The tool, moreover; is capable of adjustin itself about the body 6 relative to the sur ace under treatment.

For supplying polishing liquid to the disk t, bottles are mounted on the arms a, as shown by broken lines in Fig. 1. Tubes 2 lead from the bottles 0 to a funnel l which is secured to the body 6 and which com-' municates, through ducts 2, With a central chamber 3 in said body. Another duct t leads from the chamber 3 through a nipple formed at the lower part of the body 6 and delivers the liquid onto the disk t which admits the same through perforations 5 to the work piece. A flanged socket y is secured to the upper surface of the disk 3 so as to form a chamber in which to rctain'the polishing liquid within reach of the perforations 5. The nipple of the body 6 projects into the socket 'j/ which is accommodated in a central aperture in the plate w.

1. A wood grinding and polishing machine comprising in combination, an electro motor suspended by means 01 a universal. link, a squirm-sectioned downward extension on the motor shaft, a pipe rigidly connet-ted to the motor casing so as to inclose said extension another pipe loosely guided within the rigid pipe and engaging the square extension of the motor shaft so as to be rotated by the latter while it allows of simultaneous longitudinal movements, a shaft secured to the lower end of the inner pipe so as to project through the outer pipe, a sleeve rotatably held on said latter shaft, a spring acting on said sleeve and on the outer pipe for holding the inner pipe normally in itsl'iigheet position, a tool held in the lower end of the latter shaft so as to allow of universal movement, and means connected to said sleeve for manipulating the tool while in movement.

2, It wood grindingand polishing machine, comprising in combination, an electroinotnr suspended by means of a universal link, a square-sectioned downward eXtension on the motor shaft, a pipe rigidly connected to the motor casing so as to inclose said extension, another pipe loosely guided within the rigid pipe and engaging the square extension of the motor shaft so as to be rotated by the latter while it allows of longitudinal movements, a shaft connected to the lower end of the inner pipe, :1 spherical body secured to the end of said latter shaft, a shell held by said body so as to allov. of universal movement, diametrically oppositescrews connected to the body and guided in vertical slots in; the shell so as to compel the latter to participate in the rotal movement of the body, a plate socure to said shell 2. polishing disk connected by means of 5 rings to said plate and provided with per. orations, means for feeding' polishing liquid through the body to the disk, a socket connected to the up or surface of the disk so as to receive the 'iqold and confine the same to the perforated portion of the disk, means for holding the inner pipe normally .-entirely Within the outer pipe, and means for-extending the inner i e and for manipulat' ,he tool.

321 i. wood grinding an blishing machine, comprising in combination, an electromotor having a longitudinally extensible shaft, a pipe rigidly connected to thognotor casing so as to mclose said-shaft, a tq iiiijfillnected to the lower end of the shaft so as to allow a universal movement, a rigid shaft connected to the motor casing opposite the rotatable shaft, a block having an. upwardly tapering slot, said rigid shaft be ing pivotcdto the block so as to move within the slot, a cage to which the block is pivoted so as to move in a plane at right angles to the movement of the rigid shaft, and a helical spring encircling the rigid shaft and abutting against the block and against a nut on the shaft, substantially as and for the purpose set forth.

JOSEF STEINGASSER. EMIL GOTTESLEBEN. Witnesses: JEAN GnUNo, CARL Grumo. 

